all but one GGI had a welded body,the 4800 was the first, and was unique, all the panels were riveted together... It also had different intakes... http://rrheritage.blogspot.com/2007/11/gg-1-4800-old-rivets.html
I wonder if Conrail thought of the problems it would create for modelers in the future when they picked 4800 out of all the GG1's to paint in the bicentennial scheme and later in Conrail blue?
YES.... i believe they did!! along with lets order SD-40-2's with standard flexicoil trucks or 10. C-32-8's or C30-7A's models no company ever make LOL